Building-block.



J. C. WHITE.

BUILDING BLOCK.

APPLIGATION TILED r313. 2a, 1913.

Patented Sept. 23, 1913.

FIGB.

UNITED STATES PATENT OFFICE.

JAMES COLLOBD WHITE, OF SEWICKLEY, PENNSYLVANIA.

BUILDING-BLOCK.

Specification of Letters Patent. Patented Sept. 23, 1913. Application filed February 28, 1913. Serial No. 751,344.

erably such as will not only effect an efiicient joining of adjacent sides and ends of the blocks, but which will also materially increase the security of the blocks attachment to buildings. To such an end I preferably employ metal pins embedded in the body of concrete at its plane of jointure with the fiber board. As shown herein, one end of the block is provided with pins 3 and one side with pins 4, the pins 3 being longitudinally disposed in the body of concrete and extending substantially the full length of the protruding portion of the fiber board 1. In the opposite end of the block suitable holes 5 are formed to receive the pins 3 of an adjacent block; and slots 6 are provided in the lower side of the block to receive pins 4 of an adjacent block, the slots being essential to the end that the end pins of the adjoining block may be slipped into the holes 5.

When the blocks are intended to be secured to the wooden studding of a building, they may be of the proper length to extend over two spaces between the studding, as particularly shown in Figs. 2 and 3, the blocks of each tier staggering with those of adjacent tiers. Each block is secured to the studd' double-pointed nails 7 driven through the offset or extended por- To all whom it may concern:

Be it known that I, JAMES CoLLoRn WHITE, residing at Sewickley, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Building-Blocks, of which improvement the following is a specification.

The object of my invention is to provlde a building block adapted to cover and form a finish for the exterior of buildings, either as a supplemental coating for old structures, or as a finishing coat or new structures; such block being light in weight, inexpensive to manufacture, and effective for its intended purpose.

A further object of my inventlon 1s to provide a simple and efficient means for inerlocking such blocks and for attaching them to buildings.

In the accompanying drawing, which forms part of my specification, I have illustrated my invention as it is embodied in its preferred form.

Figure 1 is a perspective view of such block; Fig. 2 is an elevation of a portion of a wall faced with the blocks shown in Fig. 1; and Fig. 3 is a horizontal sectional view through the wall of Fig. 2, showing the blocks secured to the studding of a building. tion of he fi rous material 1, such nails ex- Having reference first to the composition ng 0Ver hc pins 3 as indicated 1n the of the block, or th mat rial nt i i t perspective view of the block, to the end that its construction, the block consists solely of a Such P1115 bewme 'e l to assist In, the la f concrete 2 b k d ith a b d f securing of the block to a wall. As far as this function of the pins 3 is concerned, it will be understood that they may extend any desired distance into the body of concrete.

The building blocks made according to my invention are constructed of small amounts of inexpensive material, and the work involved in It will therefore structure or a new building may be provided with such blocks at a small cost. That such blocks are effective for the purpose described is readily apparent. The fibrous back forms a heat insulating layer around the building and the concrete face forms a durable surface which will not crack or be otherwise injured by temperature changes, and which mav be molded and colored to represent any well known building material.

I do not wish to limit myself to the form of the block shown herein, or to the particular interlocking means, for obviously many fibrous material 1, such as asbestos, pasteboard, or other heat insulating material. The fibrous board 1 should be of such a character that the concrete will adhere firmly to its surface, and also of sufiicient strength to sustain a portion of the weight of the concrete when the block is secured to a building. In constructing the block the concrete layer 2 is molded and compressed upon the surface of the fibrous back, which preferably extends beyond one or more sides of the concrete to the end that the block may be fastened in its desired position by means of nails driven through such extension of the fibrous back. If desired, the molds for making the block may be so constructed that the outer surface of the block will represent brickwork or the face of a building stone.

A further feature of my invention has to do with the interlocking of the blocks. The interlocking means which I employ are prefchanges may be made by those skilled in the tending through said-fibrous board and enart without departing from the spirit of my gaging said pins and said wall.

invention as defined in the appended claims. 3. The combination with a wall, of a plu- I claim as my invention: rality of building blocks each formed solely 1. A compound building block formed of a layer of concrete molded and comsolely of a layer of concrete molded and pressed upon a board of fibrous material,

compressed upon a board of fibrous material said fibrous materl l protruding at one end protruding at one end beyond one edge of beyond the edge of said concrete layer, there said concrete layer, pins molded in and held being pins molded in and held firmly by the firmly by the body of said concrete and exbody of said concrete and extending upon tending upon said protruding fibrous board. said protruding fibrous load, and double- 2. The combination with a wall, of a plupointed nails extending over said pins and rality of building blocks each formed of a engaging said Wall through said protruding layer of concrete molded and compressed fibrous board.

upon a board of fibrous material, said fibrous In testimony whereof I have hereunto set material protruding at one end beyond the my hand.

edge of said concrete layer, there being pins JAMES COLLORD WHITE.

molded in and held firmly by said body of Witnesses:

concrete and extending upon said protrud- PAUL N. CRITCHIJON,

ing fibrous board, and securing members ex- FRANoIs J. TOMASSON. 

